Attachment for operating gate valves by means of fluid pressure from any desired distance



Aug. 20, 1935. c. HALL. JR 9 ATTACHMENT FOR OPERATING GATE VALVES BYMEANS 0F FLUID PRESSURE FROM ANY DESIRED DISTANCE Original Filed July22, 1952 2 Sheets-Sheet l 3nventor Aug. 20, 1935. HALL, JR 2,012,003

ATTACHMENT FOR OPERATING GATE VALVES BY MEANS OF FLUID PRESSURE FROM ANYDESIRED DISTANCE Original Filed July 22, 1952 2 Sheets-Sheet 2 ImventorCZEQZQQE attorneys Patented Aug. 26, 1935 ATTACHMENT FOR OPERATING GATEVALVES BY MEANS OF FLUID PRES- SURE FROM ANY DESIRED DISTANCE CarlosHall, Jr., Mexico D. F., Mexico Original application July 22, 1932,Serial No.

624,127. Divided and this application July 26, 1934, Serial No. 737,130.In Mexico June 23,

2 Claims. (01. 137-439 This invention refers to an attachment foropening and closing gate valves by means of pressure of water, air,steam, gas or any other fluid element from any desired distance or byhand.

This invention is a division of my copending application 624,127 filedJuly 22, 1932, now Patent No. 1,977,554, dated October 16, 1934.

The attachment according to the present invention is illustrated in theaccompanying drawings, .in which. the same numbers of reference refer tothe sameparts in all the figures.

It is the primary object of this invention to provide an attachment ofthe type mentioned particularly adapted for use on rising stemvalves. 7

valve.

Fig. 2 is a vertical semi-sectional view of the same valve seen from theside.

Fig. 3 is a complete view-of an attachment with only one cylinder,connected to a rising stem valve; I

Fig. 4 shows a vertical cross section of the'same attachment and valve.A Fig. 5 is a complete view of an attachment with only one cylinder forrising stem valves.

The following is a description of the mechanism and operation of thedifferent attachments mentioned in theforegoing.

In order to better understand the operation of this attachment, in thefollowing the so called rising stem valve will be briefly described,with reference toFigs; 1 and 2 which show such a valve of standardconstruction.

This valve consists of a gate (lit) whichis fixed in its upper part bymeans of thread (5?) to the stem (58') of the valve. The ascending anddescending movements of this stem are effected by the hand wheel (59)and the gateiiiii) follows said stem in its movements thus closing oropen-.

ing the valve. This is different from-the fnon' rising stem valve inwhich the stem is firmly secured to the body of the valve and only'thegate ascends and descends on said stem: to open or close the valve. I

In order to provide a valve of the rising stem type with theattachmentfor distant control by fluid pressure, the following has to bedone:

From'the standard valve as shown in Figs. 1 and 2 are removed the screwand nut (69) which hold together the braces (6|), the screws and nuts(62) which secure the braces to the-rims (63) of the valve, the braces(6|) andthe hand wheel (59), leaving the stem (58) entirely free.

Once this has been done, the attachment shown Fig. 1 is front view of anordinary rising stem,

7 and 5 is composed of the following pieces:

7 position.

in Figs. 3, 4 and 5 is placed in the following manner:

The base (10) is mounted on the rims (63) of brace (it) by means of thescrews and nuts (ll) The attachment works in the following mannerz'whenpressure is applied through the pipe (Iii) the plunger (M) will descendand close the gate (5t) of the valve bymeans of the stem ('53), the bentarm (72), the block (ll), the brace ('86) l and the stem' (58) of thevalve carrying the gate The attachment, as may be seen in Figs. 3, 4 Theprincipal body is formed by the cylinder (78) and the base ('18). Thelower mouth of the cylinder is hermetically closed by the plug] (19)which servesas a stufiing box for the gland (80). In side the cylinder(18) is the stem. (Mlwhich operates the attachment by means of fiuidpres-, sure. The stem ("#3) passes through the centre of the plunger('M) and is packed at the upper part of the cylinder by means of thestufling 'box and at the lower part of the cylinder by the plug (19) andgland (8B).

To, open and close the valve by hand the following has to be done: fluidpressure is applied through'the pipe (l3) until the plunger (it) hasdescended completely, or in other words, until the gate (55) of thevalve is in a completely closed Thereafter the block or spool (ll) isturned by means of a wrench, and as this block has. in its centreathread which corresponds to the thread on the stem (53) of the valve, itwill open or close the gateiilfi).

Having thus described the invention, what I claim is:

1. A distant operating attachment for standard gate-valves of the typehaving a body,a gate, a bonnet and a stem operating through the bonnet:comprising an attaching and supporting base de-'-" tachably mounted'onthe bonnet'of the valve, a single cylinder carried with saidbaselaterally of the stem and parallelthere'to, a piston operating in thecylinder, a piston rod connected to the piston and opening through thecylinder,- a laterally extending and bentarm connecting the upperprojecting end of the piston rod with theupper end of the, stem of thevalve, and hand.

operable means for operating the valve stem interposed between the stemand the arm.

2. An attachment for convertingstandard hand operated, gate valves ofthe rising stem'type into gate valves of remote control by fluidpressure which comprises a cylinder detachably mounted on the bonnetjofthe valve by means of 7 an integral lateral base, a piston operatingwithin said cylinder by fluid pressure, a piston rod I connected to saidpiston and operating through the cylinder, a bent arm having one endconnected firmly to the upper end of the piston rod and the other endconnected to'the upper end of the valve stem by means of a spool withinterior'thread which serves-for operating the valve byhand. .t v

' CARLOS HALL, JR.

